US6572667B1 - Filter system - Google Patents

Filter system Download PDF

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Publication number
US6572667B1
US6572667B1 US09/708,507 US70850700A US6572667B1 US 6572667 B1 US6572667 B1 US 6572667B1 US 70850700 A US70850700 A US 70850700A US 6572667 B1 US6572667 B1 US 6572667B1
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Prior art keywords
filter element
filter
housing
main
main filter
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Expired - Lifetime
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US09/708,507
Inventor
Volker Greif
Edvard Kopec
Manfred Winter
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Mann and Hummel GmbH
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Filterwerk Mann and Hummel GmbH
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Assigned to FILTERWERK MANN & HUMMEL GMBH reassignment FILTERWERK MANN & HUMMEL GMBH ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: WINTER, MANFRED, GREIF, VOLKER, KOPEC, EDVARD
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
    • B01D46/24—Particle separators, e.g. dust precipitators, using rigid hollow filter bodies
    • B01D46/2403—Particle separators, e.g. dust precipitators, using rigid hollow filter bodies characterised by the physical shape or structure of the filtering element
    • B01D46/2411—Filter cartridges
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
    • B01D46/56—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours with multiple filtering elements, characterised by their mutual disposition
    • B01D46/62—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours with multiple filtering elements, characterised by their mutual disposition connected in series
    • B01D46/64—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours with multiple filtering elements, characterised by their mutual disposition connected in series arranged concentrically or coaxially
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D50/00—Combinations of methods or devices for separating particles from gases or vapours
    • B01D50/20—Combinations of devices covered by groups B01D45/00 and B01D46/00
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2275/00—Filter media structures for filters specially adapted for separating dispersed particles from gases or vapours
    • B01D2275/20—Shape of filtering material
    • B01D2275/208—Oval shape

Definitions

  • the present invention relates to a filter system for the air intake of internal combustion engines.
  • An air filter is described in published German Patent Application No. DE 197 56 247, which serves especially for cleaning the air taken in by an internal combustion engine.
  • the air filter is of a substantially oval or elliptic shape. This has the purpose of improving the drainage of any water that might enter the filter and of improving the air throughput capacity of the filter.
  • a product separator is disclosed in published German Patent Application No. DE 196 18 198, which serves to separate solid particles from a gas stream.
  • a filter cartridge is provided, which is arranged in a housing.
  • the housing furthermore comprises a baffle which is intended to direct a portion of the inflowing solid particles directly into a container without loading the filter.
  • a disadvantage of this so-called “pre-separator” is that only relatively large dirt particles are removed. A large part of the dust and floating substances reaches the filter cartridge and leads to a rapid build-up of a filter cake which increases the resistance to flow.
  • a filter system for the air intake of an internal combustion engine comprising a housing, a pre-separator, a main filter element disposed in the housing, and a cover closing the housing, wherein both the housing and the filter element have a substantially oval contour which is adapted to the contour of a covering for the internal combustion engine.
  • a filter system for an air intake of an internal combustion engine comprising an oval housing, a cover disposed at one end of the oval housing for closing the housing, the housing having a clean air outlet connection disposed opposite from the cover and an unfiltered air inlet provided on the geodetically lower side of the housing, at least one cyclone separator arranged to receive air from the unfiltered air inlet, the cyclone separator comprising a guide element, a dust collecting chamber, and a clean air opening, an oval, pleated filter element disposed in the housing, a radial sealing gasket sealingly interposed exteriorly of the pleated filter element between the pleated filter element and the clean air outlet such that a clean air space inside the clean air outlet is sealingly separated from a raw air space outside the pleated filter element, the pleated filter element having an end plate disposed opposite from the clean air outlet, and a compression spring disposed between the end plate of the pleated filter element and the cover of the housing such that the
  • the objects are achieved by providing a filter element for installation in a housing of an air filter system of an internal combustion engine; the filter element comprising an oval supporting body, a pleated paper main filter supported by the supporting body; a filter fleece also supported by the supporting body, a first end plate sealingly connected to the main filter, the first end plate having a gasket receptacle thereon, the gasket receptacle comprising two radially outwardly extending branches, a profiled gasket member disposed between the radially outwardly extending branches such that when the filter is installed in a housing, the gasket member produces a radial seal between the filter element and the housing, and a second end plate sealingly connected to the main filter opposite from the first end plate, the second end plate being closed and having a contour which receives a compression spring.
  • An important advantage of the invention is that the combination of an oval filter element requiring little space and having a centrifugal separator makes possible an especially compact form.
  • a secondary element is provided within the filter system and within the main filter element.
  • the secondary filter element remains on the clean air connection, so that the entry of dust or dirt into the clean air area is prevented during replacement of the main filter element.
  • a fleece material is used.
  • This fleece material has the advantage of assuring good protection of the clean air area combined with a low resistance to flow.
  • the main filter element is provided with an externally placed radial seal on the end facing the clean air connection.
  • a compression spring thrusting on the one hand against the main filter element and on the other hand against a housing cover provides reliable support for the main filter element in the housing.
  • FIG. 1 is a sectional view through a filter according to the present invention.
  • FIG. 2 is a view of a filter according to the invention seen from the clean air side.
  • the filter system according to FIG. 1 comprises a housing 10 which can be closed by a hinged cover 11 .
  • a filter element 12 as the main filter element, as well as a filter element 13 as secondary element or safety filter.
  • the filter element 12 is provided at its left end with a gasket 14 and is there in contact with the housing. At the right end the filter element is urged against the cover 11 by a spring 15 on the cover 11 .
  • the compression spring secures the filter element in the position shown in FIG. 1 .
  • the filter element 12 is comprised of a pleated filter paper or filter fleece which is held by two end plates 16 and 17 .
  • the contaminated intake air to be filtered first flows according to arrow 18 into a pre-separation system 19 .
  • This pre-separation system 19 is comprised of individual cyclone separators, only one element being shown as a representative of the plurality of cyclone separators.
  • This element 20 sets the entering raw air in rotation, so that dust particles are flung outwardly according to the arrow 21 , to where they enter a dust accumulating chamber 22 and can be discharged through the dust discharge valve 23 .
  • the precleaned air flows centrally according to arrow 24 , upwardly through a clean air opening and on into the outer area 26 of the secondary filter system. As this air flows through the filter element 12 the residual particles are filtered out.
  • the cleaned intake air enters into the clean air area 27 and flows from there through the clean air opening 28 to the internal combustion engine, which is not shown.
  • FIG. 2 shows a plan view of the configuration of the housing 10 and thus also of the filter element 12 .
  • the housing 10 is of substantially oval shape.
  • the cover 11 is attached to the housing 10 by the hinge 29 .
  • the filter element 12 conforms to the oval shape of the housing 10 and therefore provides a very large active filter area.
  • the centrifugal separator area 19 extends over nearly the entire breadth of the oval housing 10 and thus allows a high air throughput.
  • the broken line 30 in FIG. 2 and also in FIG. 1 represents the contour of the motor hood of the vehicle. It is evident that the filter system is optimally fitted to this contour.

Abstract

A filter system for the air intake of an internal combustion engine, in which an oval filter element is disposed in a housing, and a pre-separator is also provided which includes one or more cyclones.

Description

BACKGROUND OF THE INVENTION
The present invention relates to a filter system for the air intake of internal combustion engines.
An air filter is described in published German Patent Application No. DE 197 56 247, which serves especially for cleaning the air taken in by an internal combustion engine. The air filter is of a substantially oval or elliptic shape. This has the purpose of improving the drainage of any water that might enter the filter and of improving the air throughput capacity of the filter.
The disadvantage of this shape is that, when this filter element becomes heavily loaded with dust, the difference in pressure between the raw air side and the clean air side increases very greatly, and this leads very soon to the clogging of the filter. Therefore an additional outside jacket is applied to this filter element, which is intended to hold out coarser particles this outer jacket, however, also requires additional space, so that the space saving effect of the oval filter is not achieved or is achieved only to a very limited extent.
A product separator is disclosed in published German Patent Application No. DE 196 18 198, which serves to separate solid particles from a gas stream. For this purpose, a filter cartridge is provided, which is arranged in a housing. The housing furthermore comprises a baffle which is intended to direct a portion of the inflowing solid particles directly into a container without loading the filter. A disadvantage of this so-called “pre-separator” is that only relatively large dirt particles are removed. A large part of the dust and floating substances reaches the filter cartridge and leads to a rapid build-up of a filter cake which increases the resistance to flow.
SUMMARY OF THE INVENTION
It is the object of the invention to provide a filter which avoids these disadvantages and to create a filter system which exhibits a high degree of separation and at the same time a long useful service life. It is precisely in the use of farm machinery, utility vehicles or other machines that a very high degree of separation is required. Nevertheless the filter system required should not be bulky.
These and other objects are achieved in accordance with the invention by providing a filter system for the air intake of an internal combustion engine, the filter system comprising a housing, a pre-separator, a main filter element disposed in the housing, and a cover closing the housing, wherein both the housing and the filter element have a substantially oval contour which is adapted to the contour of a covering for the internal combustion engine.
In accordance with another aspect of the invention, the objects are achieved by providing a filter system for an air intake of an internal combustion engine, the filter system comprising an oval housing, a cover disposed at one end of the oval housing for closing the housing, the housing having a clean air outlet connection disposed opposite from the cover and an unfiltered air inlet provided on the geodetically lower side of the housing, at least one cyclone separator arranged to receive air from the unfiltered air inlet, the cyclone separator comprising a guide element, a dust collecting chamber, and a clean air opening, an oval, pleated filter element disposed in the housing, a radial sealing gasket sealingly interposed exteriorly of the pleated filter element between the pleated filter element and the clean air outlet such that a clean air space inside the clean air outlet is sealingly separated from a raw air space outside the pleated filter element, the pleated filter element having an end plate disposed opposite from the clean air outlet, and a compression spring disposed between the end plate of the pleated filter element and the cover of the housing such that the compression spring urges the pleated filter element against the clean air outlet and retains the pleated filter element in the housing.
In accordance with a still further aspect of the invention, the objects are achieved by providing a filter element for installation in a housing of an air filter system of an internal combustion engine; the filter element comprising an oval supporting body, a pleated paper main filter supported by the supporting body; a filter fleece also supported by the supporting body, a first end plate sealingly connected to the main filter, the first end plate having a gasket receptacle thereon, the gasket receptacle comprising two radially outwardly extending branches, a profiled gasket member disposed between the radially outwardly extending branches such that when the filter is installed in a housing, the gasket member produces a radial seal between the filter element and the housing, and a second end plate sealingly connected to the main filter opposite from the first end plate, the second end plate being closed and having a contour which receives a compression spring.
An important advantage of the invention is that the combination of an oval filter element requiring little space and having a centrifugal separator makes possible an especially compact form.
In accordance with one embodiment of the invention, a secondary element is provided within the filter system and within the main filter element. When the main filter element is replaced the secondary filter element remains on the clean air connection, so that the entry of dust or dirt into the clean air area is prevented during replacement of the main filter element.
In another embodiment of the secondary element, a fleece material is used. This fleece material has the advantage of assuring good protection of the clean air area combined with a low resistance to flow.
In another advantageous embodiment, which relates to the mounting of the main filter element, the main filter element is provided with an externally placed radial seal on the end facing the clean air connection. A compression spring thrusting on the one hand against the main filter element and on the other hand against a housing cover provides reliable support for the main filter element in the housing.
These and other features of preferred embodiments of the invention, in addition to being set forth in the claims, are also disclosed in the specification and/or the drawings, and the individual features each may be implemented in embodiments of the invention either individually or in the form of subcombinations of two or more features and can be applied to other fields of use and may constitute advantageous, separately protectable constructions for which protection is also claimed.
BRIEF DESCRIPTION OF THE DRAWINGS
The invention will be described in further detail hereinafter with reference to illustrative preferred embodiments shown in the accompanying drawings in which:
FIG. 1 is a sectional view through a filter according to the present invention; and
FIG. 2 is a view of a filter according to the invention seen from the clean air side.
DETAILED DESCRIPTION OF PREFERRED EMBODIMENTS
The filter system according to FIG. 1 comprises a housing 10 which can be closed by a hinged cover 11. In the housing 10 there is a filter element 12 as the main filter element, as well as a filter element 13 as secondary element or safety filter. The filter element 12 is provided at its left end with a gasket 14 and is there in contact with the housing. At the right end the filter element is urged against the cover 11 by a spring 15 on the cover 11. The compression spring secures the filter element in the position shown in FIG. 1. The filter element 12 is comprised of a pleated filter paper or filter fleece which is held by two end plates 16 and 17. The contaminated intake air to be filtered first flows according to arrow 18 into a pre-separation system 19. This pre-separation system 19 is comprised of individual cyclone separators, only one element being shown as a representative of the plurality of cyclone separators. This element 20 sets the entering raw air in rotation, so that dust particles are flung outwardly according to the arrow 21, to where they enter a dust accumulating chamber 22 and can be discharged through the dust discharge valve 23. The precleaned air flows centrally according to arrow 24, upwardly through a clean air opening and on into the outer area 26 of the secondary filter system. As this air flows through the filter element 12 the residual particles are filtered out. The cleaned intake air enters into the clean air area 27 and flows from there through the clean air opening 28 to the internal combustion engine, which is not shown.
FIG. 2 shows a plan view of the configuration of the housing 10 and thus also of the filter element 12. The housing 10 is of substantially oval shape. The cover 11 is attached to the housing 10 by the hinge 29. The filter element 12 conforms to the oval shape of the housing 10 and therefore provides a very large active filter area. The centrifugal separator area 19 extends over nearly the entire breadth of the oval housing 10 and thus allows a high air throughput. The broken line 30 in FIG. 2 and also in FIG. 1 represents the contour of the motor hood of the vehicle. It is evident that the filter system is optimally fitted to this contour.
The foregoing description and examples have been set forth merely to illustrate the invention and are not intended to be limiting. Since modifications of the disclosed embodiments incorporating the spirit and substance of the invention may occur to persons skilled in the art, the invention should be construed broadly to include all variations falling within the scope of the appended claims and equivalents thereof.

Claims (10)

What is claimed is:
1. A filter system for the air intake of an internal combustion engine, said filter system comprising a housing, a pre-separator, a main filter element disposed in the housing, a pivotable cover attached to the housing by a hinge for closing the housing, and a safety filter element disposed inside said main filter element for preventing dust from entering a clean air space during a replacement of the main filter element, wherein the safety filter element is a fleece filter element, and wherein both the housing and the filter element have a substantially oval contour which is adapted to the contour of a covering for the internal combustion engine.
2. A filter system according to claim 1, wherein said at least one pre-separator is a cyclone separator.
3. A filter system according to claim 1, wherein said main filter element is a pleated paper filter element.
4. A filter system according to claim 1, wherein during the replacement of the main filter element, the safety filter element remains at an entry to the clean air space.
5. A filter system according to claim 1, further comprising a radial gasket provided externally on the main filter element at a first end of the main filter element which faces a clean air outlet, and a compression spring disposed at a second end of the main filter element opposite the first end, said compression spring being positioned between the second end of the main filter and the cover which closes the filter housing and urging the main filter against the clean air outlet.
6. A filter element for installation in a housing of an air filter system of an internal combustion engine; said filter element comprising an oval supporting body, a pleated paper main filter supported by said supporting body; a filter fleece also supported by said supporting body, the filter fleece being disposed inside said main filter for preventing dust from entering a clean air space during a replacement of the main filter; a first end plate sealingly connected to the main filter, said first end plate having a gasket receptacle thereon, said gasket receptacle comprising two radially outwardly extending branches, a profiled gasket member disposed between said radially outwardly extending branches such that when the filter element is installed in a housing, the gasket member produces a radial seal between the filter element and the housing, and a second end plate sealingly connected to the main filter opposite from said first end plate, said second end plate being closed and having a contour which receives a compression spring.
7. A filter element according to claim 6, wherein said contour comprises a substantially cylindrical projection on which the compression spring is received.
8. A filter element according to claim 6, wherein said contour comprises a substantially annular recess in which the compression spring is received.
9. A filter element according to claim 6, wherein said contour comprises a substantially cylindrical recess in which the compression spring is received.
10. A filter element according to claim 6, wherein said filter paper forms a ring and said filter fleece is disposed inside the filter paper ring.
US09/708,507 1999-11-09 2000-11-09 Filter system Expired - Lifetime US6572667B1 (en)

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DE19954720 1999-11-09
DE19954720 1999-11-09

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Cited By (59)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20040040271A1 (en) * 2002-05-23 2004-03-04 Mann & Hummel Gmbh Filter in a filter housing
US20040128963A1 (en) * 2002-09-30 2004-07-08 Honda Giken Kogyo Kabushiki Kaisha Air cleaner device for vehicle
US20040173178A1 (en) * 2003-03-06 2004-09-09 Andreas Stihl Ag & Co., Kg Intake air filter
US20040226272A1 (en) * 2003-05-14 2004-11-18 Guido Valentini Motorized tool with suction and dust collection capacity
US20050076625A1 (en) * 2003-09-08 2005-04-14 Mahan Dennis Ward Air box lid having an integrated filter
WO2005049177A1 (en) 2003-11-17 2005-06-02 Donaldson Company, Inc. Separator arrangement for gas/liquid separation; apparatus; and, methods
US20050229561A1 (en) * 2002-05-09 2005-10-20 Nepsund Larry R Air filter having fluted filter media
US20060112668A1 (en) * 2000-12-04 2006-06-01 Donaldson Company, Inc. Filter system; element configuration; and methods
US20060225389A1 (en) * 2002-10-28 2006-10-12 Donaldson Company, Inc. Air cleaner; replaceable filter cartridges; and, methods
US20060254229A1 (en) * 2005-05-03 2006-11-16 Kevin Schrage Air cleaner; air filter cartridge and method of manufacturing
US20070131194A1 (en) * 2004-03-31 2007-06-14 Mann & Hummel Gmbh Intake filter for an internal combustion engine of a motor vehicle
US20070175194A1 (en) * 2003-11-12 2007-08-02 Donaldson Company, Inc. Filter arrangements; side-entry housings; and methods
US20070289265A1 (en) * 2004-04-30 2007-12-20 Donaldson Company, Inc. Filter Arrangements; Housing; Assemblies; and, Methods
US20080022641A1 (en) * 2004-02-17 2008-01-31 Donaldson Company, Inc. Air Cleaner Arrangements; Serviceable Filter Elements; And, Methods
US20080066434A1 (en) * 2006-06-22 2008-03-20 Kuempel Bradley A Air cleaner arrangements; components thereof; and, methods
US20080115470A1 (en) * 2006-06-22 2008-05-22 Kuempel Bradley A Air cleaner arrangements; components thereof; and, methods
US20080152005A1 (en) * 2006-12-22 2008-06-26 Qualcomm Incorporated Systems and methods for efficient spatial intra predictabilty determination (or assessment)
WO2008086328A1 (en) * 2007-01-09 2008-07-17 Donaldson Company, Inc. Filter arrangement and methods
US20080190082A1 (en) * 2004-08-25 2008-08-14 Donaldson Company, Inc. Air Cleaner; Replaceable Filter Cartridges; and Methods
US20080257161A1 (en) * 2005-01-19 2008-10-23 Donaldson Company Inc. Air/Oil Separator and Inlet Baffle Arrangement
US20090071111A1 (en) * 2007-06-14 2009-03-19 Donaldson Company, Inc Crankcase ventilation filter arrangments; components; and, methods
US20090094951A1 (en) * 2007-07-20 2009-04-16 Donaldson Company, Inc Air cleaner arrangments with end support for cartridge; components; and, methods
US20090100813A1 (en) * 2007-07-20 2009-04-23 Donaldson Company, Inc Air cleaner arrangements; components; and, methods
US20090217632A1 (en) * 2005-08-16 2009-09-03 Coulonvaux Paul R Air cleaner having anti-rotational arrangement and methods
US20100064643A1 (en) * 2007-03-23 2010-03-18 Mann+Hummel Gmbh Filter for cleaning a fluid
WO2009106591A3 (en) * 2008-02-26 2010-03-25 Mann+Hummel Gmbh Air filter comprising a prefractionator
US7708797B2 (en) 2006-01-20 2010-05-04 Donaldson Company, Inc. Air cleaner configured for receipt of various sized filter cartridges; components thereof; and, methods
US20100146917A1 (en) * 2006-10-06 2010-06-17 Donaldson Company Inc. Air cleaner, replaceable filter cartridges, and methods
US20100146920A1 (en) * 2007-04-03 2010-06-17 Donaldson Company, Inc Air cleaner; air filter cartridge and method of manufacturing
US7812065B2 (en) 2006-01-09 2010-10-12 Kettenbach Gmbh & Co., Kg Dental impression masses, hardened products produced from them, and use of surfactants for the production of dental impression masses
CN101977666A (en) * 2007-06-14 2011-02-16 唐纳森公司 Crankcase ventilation filter arrangements
CN102068841A (en) * 2009-10-06 2011-05-25 曼·胡默尔有限公司 Filter system for filtering fluids
USD646369S1 (en) 2008-07-22 2011-10-04 Donaldson Company, Inc. Filter cartridge
US8357219B2 (en) 2005-10-11 2013-01-22 Donaldson Company, Inc. Air filter arrangement; assembly and methods
US8382876B2 (en) 2004-06-18 2013-02-26 Donaldson Company, Inc. Air cleaner arrangement; serviceable filter cartridge; and, methods
US8714142B2 (en) 2007-08-02 2014-05-06 Donaldson Company, Inc. Crankcase ventilation filter assembly; components; and methods
US8747512B2 (en) 2005-02-04 2014-06-10 Donaldson Company, Inc. Non-cylinderical filter elements; and, methods
US20140165518A1 (en) * 2012-12-18 2014-06-19 Toyota Boshoku Kabushiki Kaisha Air cleaner
US8758467B2 (en) 2007-03-20 2014-06-24 Donaldson Company, Inc. Aerosol separator assembly; components; and methods
US8864866B2 (en) 2011-10-26 2014-10-21 Donaldson Company, Inc. Filter assemblies; components and features thereof; and, methods of use and assembly
US9067161B2 (en) 2012-11-29 2015-06-30 Donaldson Company, Inc. Filter cartridges; features and methods of assembly; air cleaner assemblies; and, filter cartridge combinations
US9346001B2 (en) 2011-02-25 2016-05-24 Donaldson Company, Inc. Air filter cartridges, components thereof; and, air cleaner assemblies
US9387425B2 (en) 2011-10-26 2016-07-12 Donaldson Company, Inc. Filter assemblies; components and features thereof; and, methods of use and assembly
US9555370B2 (en) 2007-09-07 2017-01-31 Donaldson Company, Inc. Air filter assembly; components thereof; and, methods
DE10262393B3 (en) 2002-05-23 2018-05-24 Mann + Hummel Gmbh Filter in a filter housing
US10359011B2 (en) 2013-05-22 2019-07-23 Donaldson Company, Inc. Vertical air intake system; air cleaner; and filter element
US20200094181A1 (en) * 2015-04-10 2020-03-26 Mann+Hummel Gmbh Filter Holder, Filter Element and Filter Arrangement
US10758859B2 (en) 2017-08-09 2020-09-01 Donaldson Company, Inc. Filter cartridges; air cleaner assemblies; housings; features; components; and, methods
US20210131389A1 (en) * 2018-07-09 2021-05-06 Mann+Hummel Gmbh Secondary Filter Element and Filter Arrangement
US11117085B2 (en) 2005-11-09 2021-09-14 Donaldson Company, Inc. Seal arrangement for filter element; filter element assembly; and, methods
US11185809B2 (en) 2007-11-15 2021-11-30 Donaldson Company, Inc. Air filter arrangements; assemblies; and, methods
US11235274B2 (en) 2011-06-30 2022-02-01 Donaldson Company, Inc. Filter systems; components; features; and, methods of assembly and use
US11311891B2 (en) * 2017-04-06 2022-04-26 Mann+Hummel Gmbh Multi-cyclone separator of a multi-stage fluid filter for cleaning gaseous fluid and multi-stage fluid filter
US11311829B2 (en) 2016-02-12 2022-04-26 Donaldson Company, Inc. Filter elements, air cleaner assemblies, and methods of use and assembly
US20220152541A1 (en) * 2020-11-16 2022-05-19 Field Controls, L.L.C. Concentric filter systems and methods for air treatment
US11504664B2 (en) 2017-05-09 2022-11-22 Donaldson Company, Inc. Adapter and air filter cartridge being adapted for use with such an adapter
US11554338B2 (en) 2016-12-01 2023-01-17 Donaldson Company, Inc. Filter elements, air cleaner assemblies, and methods of use and assembly
US11679352B2 (en) 2004-04-30 2023-06-20 Donaldson Company, Inc. Filter arrangements; housings; assemblies; and, methods
USD1002792S1 (en) 2019-02-05 2023-10-24 Donaldson Company, Inc. Filter cartridge

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3584439A (en) * 1968-06-20 1971-06-15 Donaldson Co Inc Fluid cleaner
US4243397A (en) 1979-06-27 1981-01-06 Donaldson Company, Inc. Air cleaner with replaceable filter element
US4491460A (en) 1983-01-31 1985-01-01 Donaldson Company, Inc. Air cleaner and deflecting intake tube
US4813385A (en) 1984-11-01 1989-03-21 Honda Giken Kogyo Kabushiki Kaisha General-purpose internal combustion engine
US5082476A (en) * 1990-10-19 1992-01-21 Donaldson Company, Inc. Filtration arrangement and method
US5320653A (en) * 1993-05-20 1994-06-14 Nelson Industries, Inc. Air precleaning apparatus
US5685985A (en) * 1995-12-20 1997-11-11 Baldwin Filters, Inc. Environmentally friendly filter cartridge
DE19756247A1 (en) 1997-12-17 1999-06-24 Bosch Gmbh Robert Air filter

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3584439A (en) * 1968-06-20 1971-06-15 Donaldson Co Inc Fluid cleaner
US4243397A (en) 1979-06-27 1981-01-06 Donaldson Company, Inc. Air cleaner with replaceable filter element
US4491460A (en) 1983-01-31 1985-01-01 Donaldson Company, Inc. Air cleaner and deflecting intake tube
US4813385A (en) 1984-11-01 1989-03-21 Honda Giken Kogyo Kabushiki Kaisha General-purpose internal combustion engine
US5082476A (en) * 1990-10-19 1992-01-21 Donaldson Company, Inc. Filtration arrangement and method
US5320653A (en) * 1993-05-20 1994-06-14 Nelson Industries, Inc. Air precleaning apparatus
US5685985A (en) * 1995-12-20 1997-11-11 Baldwin Filters, Inc. Environmentally friendly filter cartridge
DE19756247A1 (en) 1997-12-17 1999-06-24 Bosch Gmbh Robert Air filter

Cited By (192)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7981187B2 (en) 2000-12-04 2011-07-19 Donaldson Company, Inc. Filter system; element configuration; and methods
US20080060326A1 (en) * 2000-12-04 2008-03-13 Donaldson Company, Inc. Filter system; element configuration; and methods
US7572310B2 (en) 2000-12-04 2009-08-11 Donaldson Company, Inc. Filter system; element configuration; and methods
US20090272085A1 (en) * 2000-12-04 2009-11-05 Donaldson Company, Inc. Filter system; element configuration; and methods
US7291198B2 (en) 2000-12-04 2007-11-06 Donaldson Company, Inc. Filter system; element configuration; and methods
US20060112668A1 (en) * 2000-12-04 2006-06-01 Donaldson Company, Inc. Filter system; element configuration; and methods
US8002869B2 (en) 2002-05-09 2011-08-23 Donaldson Company, Inc. Air filter having fluted filter media
US20100095642A1 (en) * 2002-05-09 2010-04-22 Donaldson Company, Inc. Air filter having fluted filter media
US11185810B2 (en) 2002-05-09 2021-11-30 Donaldson Company, Inc. Air filter having fluted filter media
US20080271423A1 (en) * 2002-05-09 2008-11-06 Donaldson Company, Inc. Air filter having fluted filter media
US7396375B2 (en) 2002-05-09 2008-07-08 Donaldson Company, Inc. Air filter having fluted filter media
US9782713B2 (en) 2002-05-09 2017-10-10 Donaldson Company, Inc. Air filter having fluted filter media
US8562707B2 (en) 2002-05-09 2013-10-22 Donaldson Company, Inc. Air filter having fluted filter media
US10556202B2 (en) 2002-05-09 2020-02-11 Donaldson Company, Inc. Air filter having fluted filter media
US8206479B2 (en) 2002-05-09 2012-06-26 Donaldson Company, Inc. Air filter having fluted filter media
US20050229561A1 (en) * 2002-05-09 2005-10-20 Nepsund Larry R Air filter having fluted filter media
US7635403B2 (en) 2002-05-09 2009-12-22 Donaldson Company, Inc. Air filter having fluted filter media
US9162172B2 (en) 2002-05-09 2015-10-20 Donaldson Company, Inc. Air filter having fluted filter media
US20040040271A1 (en) * 2002-05-23 2004-03-04 Mann & Hummel Gmbh Filter in a filter housing
DE10262393B3 (en) 2002-05-23 2018-05-24 Mann + Hummel Gmbh Filter in a filter housing
US7004986B2 (en) * 2002-05-23 2006-02-28 Mann & Hummel Gmbh Filter in a filter housing
US7022152B2 (en) * 2002-09-30 2006-04-04 Honda Giken Kogyo Kabushiki Kaisha Air cleaner device for vehicle
US20040128963A1 (en) * 2002-09-30 2004-07-08 Honda Giken Kogyo Kabushiki Kaisha Air cleaner device for vehicle
US9353657B2 (en) 2002-10-28 2016-05-31 Donaldson Company, Inc. Air cleaner; replaceable filter cartridges; and, methods
US20100126131A1 (en) * 2002-10-28 2010-05-27 Donaldson Company, Inc. Air cleaner; replaceable filter cartridges; and, methods
US7662203B2 (en) 2002-10-28 2010-02-16 Donaldson Company, Inc. Air cleaner; replaceable filter cartridges; and, methods
US10717034B2 (en) 2002-10-28 2020-07-21 Donaldson Company, Inc. Air cleaner; replaceable filter cartridges; and, methods
US11478741B2 (en) 2002-10-28 2022-10-25 Donaldson Company, Inc. Air cleaner; replaceable filter cartridges; and, methods
US8852309B2 (en) 2002-10-28 2014-10-07 Donaldson Company, Inc. Air cleaner; replaceable filter cartridges; and, methods
US20060225389A1 (en) * 2002-10-28 2006-10-12 Donaldson Company, Inc. Air cleaner; replaceable filter cartridges; and, methods
US8460425B2 (en) 2002-10-28 2013-06-11 Donaldson Company, Pnc. Air cleaner; replaceable filter cartridges; and, methods
US7988757B2 (en) 2002-10-28 2011-08-02 Donaldson Company, Inc. Air cleaner; replaceable filter cartridges; and, methods
US20040173178A1 (en) * 2003-03-06 2004-09-09 Andreas Stihl Ag & Co., Kg Intake air filter
US7118609B2 (en) * 2003-05-14 2006-10-10 Guido Valentini Motorized tool with suction and dust collection capacity
US20040226272A1 (en) * 2003-05-14 2004-11-18 Guido Valentini Motorized tool with suction and dust collection capacity
US20050076625A1 (en) * 2003-09-08 2005-04-14 Mahan Dennis Ward Air box lid having an integrated filter
US7282076B2 (en) * 2003-09-08 2007-10-16 Dennis Ward Mahan Air box lid having an integrated filter
US7981183B2 (en) 2003-11-12 2011-07-19 Donaldson Company, Inc. Filter arrangements; side-entry housings; and methods
US20100132321A1 (en) * 2003-11-12 2010-06-03 Donaldson Company, Inc. Filter arrangements; side-entry housings; and methods
US7655074B2 (en) 2003-11-12 2010-02-02 Donaldson Company, Inc. Filter arrangements; side-entry housings; and methods
US20070175194A1 (en) * 2003-11-12 2007-08-02 Donaldson Company, Inc. Filter arrangements; side-entry housings; and methods
US8182569B2 (en) 2003-11-17 2012-05-22 Donaldson Company, Inc. Separator arrangement for gas/liquid separation; apparatus; and, methods
US7332009B2 (en) 2003-11-17 2008-02-19 Donaldson Company, Inc. Separator arrangement for gas/liquid separation; apparatus; and, methods
US20090049812A1 (en) * 2003-11-17 2009-02-26 Donaldson Company, Inc. Separator arrangement for gas/liquid separation; apparatus; and, methods
WO2005049177A1 (en) 2003-11-17 2005-06-02 Donaldson Company, Inc. Separator arrangement for gas/liquid separation; apparatus; and, methods
CN100484608C (en) * 2003-11-17 2009-05-06 唐纳森公司 Separator arrangement for gas/liquid separation, apparatus, and methods
US20050120687A1 (en) * 2003-11-17 2005-06-09 Casey Michael J. Separator arrangement for gas/liquid separation; apparatus; and, methods
US8394164B2 (en) 2003-11-17 2013-03-12 Donaldson Company, Inc. Separator arrangement for gas/liquid separation; apparatus; and, methods
USRE45588E1 (en) 2004-02-17 2015-06-30 Donaldson Company, Inc. Air cleaner arrangements; serviceable filter elements; and, methods
US7682416B2 (en) 2004-02-17 2010-03-23 Donaldson Company, Inc. Air cleaner arrangements; serviceable filter elements; and, methods
US20080022641A1 (en) * 2004-02-17 2008-01-31 Donaldson Company, Inc. Air Cleaner Arrangements; Serviceable Filter Elements; And, Methods
US7972405B2 (en) 2004-02-17 2011-07-05 Donaldson Company, Inc. Air cleaner arrangements; serviceable filter elements; and, methods
US7862639B2 (en) * 2004-03-31 2011-01-04 Mann + Hummel Gmbh Intake filter for an internal combustion engine of a motor vehicle
US20070131194A1 (en) * 2004-03-31 2007-06-14 Mann & Hummel Gmbh Intake filter for an internal combustion engine of a motor vehicle
US20070289265A1 (en) * 2004-04-30 2007-12-20 Donaldson Company, Inc. Filter Arrangements; Housing; Assemblies; and, Methods
US9283507B2 (en) 2004-04-30 2016-03-15 Donaldson Company, Inc. Filter arrangements; housings; assemblies; and, methods
US10252206B2 (en) 2004-04-30 2019-04-09 Donaldson Company, Inc. Filter arrangements; housings; assemblies; and, methods
US11679352B2 (en) 2004-04-30 2023-06-20 Donaldson Company, Inc. Filter arrangements; housings; assemblies; and, methods
US8641795B2 (en) 2004-04-30 2014-02-04 Donaldson Company, Inc. Filter arrangements; housing; assemblies; and, methods
US7905936B2 (en) 2004-04-30 2011-03-15 Donaldson Company, Inc. Filter arrangements; housing; assemblies; and, methods
US8343245B2 (en) 2004-04-30 2013-01-01 Donaldson Company, Inc. Filter arrangements; housings; assemblies; and, methods
US11123673B2 (en) 2004-04-30 2021-09-21 Donaldson Company, Inc. Filter arrangements; housings; assemblies; and, methods
US10343101B2 (en) 2004-04-30 2019-07-09 Donaldson Company, Inc. Filter arrangements; housings; assemblies; and, methods
US8382876B2 (en) 2004-06-18 2013-02-26 Donaldson Company, Inc. Air cleaner arrangement; serviceable filter cartridge; and, methods
US8702831B2 (en) 2004-08-25 2014-04-22 Donaldson Company, Inc. Air cleaner; replaceable filter cartridges; and, methods
US8216335B2 (en) 2004-08-25 2012-07-10 Donaldson Company, Inc. Air cleaner; replaceable filter cartridges; and methods
US20080190082A1 (en) * 2004-08-25 2008-08-14 Donaldson Company, Inc. Air Cleaner; Replaceable Filter Cartridges; and Methods
US10307704B2 (en) 2004-08-25 2019-06-04 Donaldson Company, Inc. Air cleaner; replaceable filter cartridges; and, methods
US8394166B2 (en) 2004-08-25 2013-03-12 Donaldson Company, Inc. Air cleaner; replaceable filter cartridges; and, methods
US9039802B2 (en) 2004-08-25 2015-05-26 Donaldson Company, Inc. Air cleaner; replaceable filter cartridges; and, methods
US8557007B2 (en) 2005-01-19 2013-10-15 Donaldson Company, Inc. Air/oil separator and inlet baffle arrangement
US20080257161A1 (en) * 2005-01-19 2008-10-23 Donaldson Company Inc. Air/Oil Separator and Inlet Baffle Arrangement
US10653991B2 (en) 2005-02-04 2020-05-19 Donaldson Company, Inc. Filter elements, air filter arrangements; and, methods
US8747512B2 (en) 2005-02-04 2014-06-10 Donaldson Company, Inc. Non-cylinderical filter elements; and, methods
US10279302B2 (en) 2005-02-04 2019-05-07 Donaldson Company, Inc. Filter elements; air filter arrangements; and, methods
US9610529B2 (en) 2005-02-04 2017-04-04 Donaldson Company, Inc. Filter elements, air filter arrangements; and methods
US7981186B2 (en) 2005-05-03 2011-07-19 Donaldson Company Inc. Air cleaner; air filter cartridge and method of manufacturing
US7524349B2 (en) 2005-05-03 2009-04-28 Donaldson Company, Inc. Air cleaner; air filter cartridge and method of manufacturing
US20090249756A1 (en) * 2005-05-03 2009-10-08 Donaldson Company, Inc. Air cleaner; air filter cartridge and method of manufacturing
US20060254229A1 (en) * 2005-05-03 2006-11-16 Kevin Schrage Air cleaner; air filter cartridge and method of manufacturing
US8163056B2 (en) 2005-08-16 2012-04-24 Donaldson Company, Inc. Air cleaner having anti-rotational arrangement and methods
US8444735B2 (en) 2005-08-16 2013-05-21 Donaldson Company, Inc. Air cleaner having anti-rotational arrangement and methods
US8753415B2 (en) 2005-08-16 2014-06-17 Donaldson Company, Inc. Air cleaner having anti-rotational arrangements and methods
US20090217632A1 (en) * 2005-08-16 2009-09-03 Coulonvaux Paul R Air cleaner having anti-rotational arrangement and methods
US9399972B2 (en) 2005-10-11 2016-07-26 Donaldson Company, Inc. Air filter arrangement; assembly; and, methods
US10427083B2 (en) 2005-10-11 2019-10-01 Donaldson Company, Inc. Air filter arrangement; assembly; and methods
US11786857B2 (en) 2005-10-11 2023-10-17 Donaldson Company, Inc. Air filter arrangement; assembly; and, methods
US8357219B2 (en) 2005-10-11 2013-01-22 Donaldson Company, Inc. Air filter arrangement; assembly and methods
US11173442B2 (en) 2005-10-11 2021-11-16 Donaldson Company, Inc. Air filter arrangement; assembly; and, methods
US8840699B2 (en) 2005-10-11 2014-09-23 Donaldson Company, Inc. Air filter arrangement; assembly; and, methods
US11117085B2 (en) 2005-11-09 2021-09-14 Donaldson Company, Inc. Seal arrangement for filter element; filter element assembly; and, methods
US7812065B2 (en) 2006-01-09 2010-10-12 Kettenbach Gmbh & Co., Kg Dental impression masses, hardened products produced from them, and use of surfactants for the production of dental impression masses
US7708797B2 (en) 2006-01-20 2010-05-04 Donaldson Company, Inc. Air cleaner configured for receipt of various sized filter cartridges; components thereof; and, methods
US7736410B2 (en) 2006-01-20 2010-06-15 Donaldson Company, Inc. Air cleaner configured for receipt of various sized filter cartridges; components thereof; and, methods
US20100236201A1 (en) * 2006-01-20 2010-09-23 Donaldson Company, Inc. Air cleaner configured for receipt of various sized fitler cartridges; components; thereof; and, methods
US8012233B2 (en) 2006-01-20 2011-09-06 Donaldson Company, Inc. Filter cartridge for air cleaner
US7972404B2 (en) 2006-06-22 2011-07-05 Donaldson Company, Inc. Air cleaner arrangements; components thereof; and, methods
US20080115470A1 (en) * 2006-06-22 2008-05-22 Kuempel Bradley A Air cleaner arrangements; components thereof; and, methods
US7713321B2 (en) 2006-06-22 2010-05-11 Donaldson Company, Inc. Air cleaner arrangements; components thereof; and, methods
US20080066434A1 (en) * 2006-06-22 2008-03-20 Kuempel Bradley A Air cleaner arrangements; components thereof; and, methods
US8273143B2 (en) 2006-10-06 2012-09-25 Donaldson Company, Inc. Air cleaner, replaceable filter cartridges, and methods
US20100146917A1 (en) * 2006-10-06 2010-06-17 Donaldson Company Inc. Air cleaner, replaceable filter cartridges, and methods
US9586166B2 (en) 2006-10-06 2017-03-07 Donaldson Company, Inc. Air cleaner replaceable filter cartridges; and, methods
US11007462B2 (en) 2006-10-06 2021-05-18 Donaldson Company, Inc. Air cleaner; replaceable filter cartridges; and, methods
US8784523B2 (en) 2006-10-06 2014-07-22 Donaldson Company, Inc. Air cleaner replaceable filter cartridges; and, methods
US20080152005A1 (en) * 2006-12-22 2008-06-26 Qualcomm Incorporated Systems and methods for efficient spatial intra predictabilty determination (or assessment)
US8425769B2 (en) 2007-01-09 2013-04-23 Donaldson Company, Inc. Filter arrangement and methods
US20100140155A1 (en) * 2007-01-09 2010-06-10 Donaldson Co., Inc. Filter arrangement and methods
WO2008086328A1 (en) * 2007-01-09 2008-07-17 Donaldson Company, Inc. Filter arrangement and methods
CN103100256B (en) * 2007-01-09 2015-09-09 唐纳森公司 Filtration device structure and method
CN101578127B (en) * 2007-01-09 2013-03-13 唐纳森公司 Filter arrangement and methods
CN103100256A (en) * 2007-01-09 2013-05-15 唐纳森公司 Filter arrangement and methods
US8758467B2 (en) 2007-03-20 2014-06-24 Donaldson Company, Inc. Aerosol separator assembly; components; and methods
US9737839B2 (en) 2007-03-20 2017-08-22 Donaldson Company, Inc. Aerosol separator assembly; components; and, methods
US20100064643A1 (en) * 2007-03-23 2010-03-18 Mann+Hummel Gmbh Filter for cleaning a fluid
US8167965B2 (en) * 2007-03-23 2012-05-01 Mann + Hummel Gmbh Filter for cleaning a fluid
US8012227B2 (en) * 2007-03-23 2011-09-06 Mann+Hummel Gmbh Filter for cleaning a fluid
US20100146920A1 (en) * 2007-04-03 2010-06-17 Donaldson Company, Inc Air cleaner; air filter cartridge and method of manufacturing
US8414675B2 (en) 2007-04-03 2013-04-09 Donaldson Company, Inc. Air cleaner; air filter cartridge and method of manufacturing
US8834610B2 (en) * 2007-06-14 2014-09-16 Donaldson Company, Inc. Crankcase ventilation filter arrangments; components; and, methods
US20090071111A1 (en) * 2007-06-14 2009-03-19 Donaldson Company, Inc Crankcase ventilation filter arrangments; components; and, methods
US9752474B2 (en) 2007-06-14 2017-09-05 Donaldson Company, Inc. Filter arrangements; components; and, methods
CN103721492B (en) * 2007-06-14 2016-01-06 唐纳森公司 Crankcase ventilation filter device, parts and method
CN101977666A (en) * 2007-06-14 2011-02-16 唐纳森公司 Crankcase ventilation filter arrangements
US20180156087A1 (en) * 2007-06-14 2018-06-07 Donaldson Company, Inc. Filter arrangements; components; and, methods
US8404029B2 (en) * 2007-06-14 2013-03-26 Donaldson Company, Inc. Crankcase ventilation filter arrangments; components; and, methods
CN103721492A (en) * 2007-06-14 2014-04-16 唐纳森公司 Crankcase ventilation filter assembly, component and method therefor
CN101977666B (en) * 2007-06-14 2014-02-05 唐纳森公司 Crankcase ventilation filter arrangements, components and method
US10837331B2 (en) * 2007-06-14 2020-11-17 Donaldson Company, Inc. Filter arrangements; components; and, methods
US10124285B2 (en) 2007-07-20 2018-11-13 Donaldson Company, Inc. Air cleaner arrangements; components; and, methods
US8066791B2 (en) 2007-07-20 2011-11-29 Donaldson Company, Inc. Air cleaner arrangements with internal and external support for cartridge; components; and, methods
US8545588B2 (en) 2007-07-20 2013-10-01 Donaldson Company, Inc. Air cleaner arrangements; components; and, methods
US10751661B2 (en) 2007-07-20 2020-08-25 Donaldson Company, Inc. Air cleaner arrangements; components; and, methods
US10710017B2 (en) 2007-07-20 2020-07-14 Donaldson Company, Inc. Air cleaner arrangement with end support for cartridge; components; and, methods
US8480778B2 (en) 2007-07-20 2013-07-09 Donaldson Company, Inc. Air cleaner arrangements; components; and, methods
US20090100813A1 (en) * 2007-07-20 2009-04-23 Donaldson Company, Inc Air cleaner arrangements; components; and, methods
US9718019B2 (en) 2007-07-20 2017-08-01 Donaldson Company, Inc. Air cleaner arrangements with end support for cartridge; components; and, methods
US9238189B2 (en) 2007-07-20 2016-01-19 Donaldson Company, Inc. Air cleaner arrangements with internal and external support for cartridge; components; and, methods
US9221004B2 (en) 2007-07-20 2015-12-29 Donaldson Company, Inc. Air cleaner arrangements; components; and, methods
US20090094951A1 (en) * 2007-07-20 2009-04-16 Donaldson Company, Inc Air cleaner arrangments with end support for cartridge; components; and, methods
US8292984B2 (en) 2007-07-20 2012-10-23 Donaldson Company, Inc. Air cleaner arrangments with end support for cartridge; components; and, methods
US8814973B2 (en) 2007-07-20 2014-08-26 Donaldson Company, Inc. Air cleaner arrangements with end support for cartridge; components; and, methods
US11517842B2 (en) 2007-07-20 2022-12-06 Donaldson Company, Inc. Air cleaner arrangement with end support for cartridge; components; and, methods
US8038756B2 (en) 2007-07-20 2011-10-18 Donaldson Company, Inc. Air cleaner arrangements; components; and, methods
US10786772B2 (en) 2007-07-20 2020-09-29 Donaldson Company, Inc. Air cleaner arrangements; components; and, methods
US10245544B2 (en) 2007-07-20 2019-04-02 Donaldson Company, Inc. Air cleaner arrangements; components; and methods
US9353658B2 (en) 2007-08-02 2016-05-31 Donaldson Company, Inc. Crankcase ventilation filter assembly; components; and methods
US8714142B2 (en) 2007-08-02 2014-05-06 Donaldson Company, Inc. Crankcase ventilation filter assembly; components; and methods
US10422306B2 (en) 2007-09-07 2019-09-24 Donaldson Company, Inc. Air filter assembly; components thereof; and, methods
US9555370B2 (en) 2007-09-07 2017-01-31 Donaldson Company, Inc. Air filter assembly; components thereof; and, methods
US11185809B2 (en) 2007-11-15 2021-11-30 Donaldson Company, Inc. Air filter arrangements; assemblies; and, methods
CN102015057A (en) * 2008-02-26 2011-04-13 曼·胡默尔有限公司 Air filter comprising a prefractionator
CN103644053B (en) * 2008-02-26 2016-06-01 曼·胡默尔有限公司 There is the air filter of coarse separator
CN103644053A (en) * 2008-02-26 2014-03-19 曼·胡默尔有限公司 Air filter comprising a prefractionator
EP2703061A1 (en) * 2008-02-26 2014-03-05 Mann + Hummel Gmbh Air filter with preliminary separator
WO2009106591A3 (en) * 2008-02-26 2010-03-25 Mann+Hummel Gmbh Air filter comprising a prefractionator
CN102015057B (en) * 2008-02-26 2013-11-27 曼·胡默尔有限公司 Air filter comprising prefractionator
USD646369S1 (en) 2008-07-22 2011-10-04 Donaldson Company, Inc. Filter cartridge
CN102068841A (en) * 2009-10-06 2011-05-25 曼·胡默尔有限公司 Filter system for filtering fluids
CN102068841B (en) * 2009-10-06 2014-12-24 曼·胡默尔有限公司 Filter system for filtering fluids
US9346001B2 (en) 2011-02-25 2016-05-24 Donaldson Company, Inc. Air filter cartridges, components thereof; and, air cleaner assemblies
US11235274B2 (en) 2011-06-30 2022-02-01 Donaldson Company, Inc. Filter systems; components; features; and, methods of assembly and use
US10835850B2 (en) 2011-10-26 2020-11-17 Donaldson Company, Inc. Filter assemblies; components and features thereof; and, methods of use and assembly
US9636615B2 (en) 2011-10-26 2017-05-02 Donaldson Company, Inc. Assemblies; components and filter features thereof; and, methods of use and assembly
US8864866B2 (en) 2011-10-26 2014-10-21 Donaldson Company, Inc. Filter assemblies; components and features thereof; and, methods of use and assembly
US11890565B2 (en) 2011-10-26 2024-02-06 Donaldson Company, Inc. Filter assemblies; components and features thereof; and, methods of use and assembly
US11839831B2 (en) 2011-10-26 2023-12-12 Donaldson Company, Inc Filter assemblies; components and features thereof; and, methods of use and assembly
US10576403B2 (en) 2011-10-26 2020-03-03 Donaldson Company, Inc. Assemblies; components and filter features thereof; and, methods of use and assembly
US9387425B2 (en) 2011-10-26 2016-07-12 Donaldson Company, Inc. Filter assemblies; components and features thereof; and, methods of use and assembly
US11331609B2 (en) 2011-10-26 2022-05-17 Donaldson Company, Inc. Assemblies; components and filter features thereof; and, methods of use and assembly
US9067161B2 (en) 2012-11-29 2015-06-30 Donaldson Company, Inc. Filter cartridges; features and methods of assembly; air cleaner assemblies; and, filter cartridge combinations
US9889398B2 (en) 2012-11-29 2018-02-13 Donaldson Company, Inc. Filter cartridges; features and methods of assembly; air cleaner assemblies; and, filter cartridge combinations
US11192053B2 (en) 2012-11-29 2021-12-07 Donaldson Company, Inc. Filter cartridges; features and methods of assembly; air cleaner assemblies; and, filter cartridge combinations
US10625191B2 (en) 2012-11-29 2020-04-21 Donaldson Company, Inc. Filter cartridges; features and methods of assembly; filter assemblies; and, filter cartridge combinations
US9925485B2 (en) 2012-11-29 2018-03-27 Donaldson Company, Inc. Filter cartridge; features and methods of assembly; filter assemblies; and, filter cartridge combinations
US9440173B2 (en) * 2012-12-18 2016-09-13 Toyota Boshoku Kabushiki Kaisha Air cleaner
US20140165518A1 (en) * 2012-12-18 2014-06-19 Toyota Boshoku Kabushiki Kaisha Air cleaner
US10359011B2 (en) 2013-05-22 2019-07-23 Donaldson Company, Inc. Vertical air intake system; air cleaner; and filter element
US11890567B2 (en) * 2015-04-10 2024-02-06 Mann+Hummel Gmbh Filter holder, filter element and filter arrangement
US20200094181A1 (en) * 2015-04-10 2020-03-26 Mann+Hummel Gmbh Filter Holder, Filter Element and Filter Arrangement
US11311829B2 (en) 2016-02-12 2022-04-26 Donaldson Company, Inc. Filter elements, air cleaner assemblies, and methods of use and assembly
US11794139B2 (en) 2016-02-12 2023-10-24 Donaldson Company, Inc. Filter elements, air cleaner assemblies, and methods of use and assembly
US11554338B2 (en) 2016-12-01 2023-01-17 Donaldson Company, Inc. Filter elements, air cleaner assemblies, and methods of use and assembly
US11311891B2 (en) * 2017-04-06 2022-04-26 Mann+Hummel Gmbh Multi-cyclone separator of a multi-stage fluid filter for cleaning gaseous fluid and multi-stage fluid filter
US11504664B2 (en) 2017-05-09 2022-11-22 Donaldson Company, Inc. Adapter and air filter cartridge being adapted for use with such an adapter
US11420147B2 (en) 2017-08-09 2022-08-23 Donaldson Company, Inc. Filter cartridges; air cleaner assemblies; housings; features; components; and, methods
US10758859B2 (en) 2017-08-09 2020-09-01 Donaldson Company, Inc. Filter cartridges; air cleaner assemblies; housings; features; components; and, methods
US11857907B2 (en) 2017-08-09 2024-01-02 Donaldson Company, Inc. Filter cartridges; air cleaner assemblies; housings; features; components; and, methods
US11725615B2 (en) * 2018-07-09 2023-08-15 Mann+Hummel Gmbh Secondary filter element and filter arrangement
US20210131389A1 (en) * 2018-07-09 2021-05-06 Mann+Hummel Gmbh Secondary Filter Element and Filter Arrangement
USD1002792S1 (en) 2019-02-05 2023-10-24 Donaldson Company, Inc. Filter cartridge
US20220152541A1 (en) * 2020-11-16 2022-05-19 Field Controls, L.L.C. Concentric filter systems and methods for air treatment

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